PIC16F877T-20/PT Microchip Technology, PIC16F877T-20/PT Datasheet - Page 605

• Manufacturer Part Number: PIC16F877T-20/PT
• Description: IC MCU FLASH 8KX14 EE 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877T-20/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 30-19: Example 8-bit A/D Conversion Timing Waveforms
Table 30-31:
Note 1: ADRES register may be read on the following T
Param
1997 Microchip Technology Inc.
No.
130
131
132
134
136
135
Note 1: If the A/D clock source is selected as RC, a time of T
†
§ This specification ensured by design.
A/D DATA
SAMPLE
tested.
A/D CLK
Data in “Typ” column is at 5V, 25 C unless otherwise stated. These parameters are for design guidance only and are not
ADRES
Symbol Characteristic
See the
BSF ADCON0, GO
T
T
T
T
ADIF
T
T
SWC
CNV
ACQ
AMP
GO
GO
Q4
AD
allows the SLEEP instruction to be executed.
Example 8-bit A/D Conversion Requirements
“8-bit A/D Converter”
A/D clock period PIC16CXXX
Conversion time
(not including S/H time) (Note 1)
Acquisition time
Q4 to A/D clock start
Amplifier settling time (Note 2)
Switching Time from
convert
132
Section 30. Electrical Specifications
sample
(T
OSC
/2)
PIC16LCXXX
PIC16CXXX
PIC16LCXXX
7
(1)
section for minimum requirements.
6
OLD_DATA
Note 2
5
Min
1.6
2.0
2.0
3.0
1 §
11
—
SAMPLING STOPPED
5
1
CY
4
cycle.
2T
Typ†
131
130
4.0
6.0
20
—
—
—
—
—
—
OSC
§
CY
3
is added before the A/D clock starts. This
Max
6.0
9.0
1 §
11
—
—
—
—
—
—
2
Units
T
T
1
—
AD
AD
s
s
s
s
s
s
s
T
T
A/D RC Mode
A/D RC Mode
The minimum time is the amplifier
settling time. This may be used if
the “new” input voltage has not
changed by more than 1 LSb (i.e.,
20.0 mV @ 5.12V) from the last
sampled voltage (as stated on
C
If the A/D clock source is selected
as RC, a time of T
before the A/D clock starts. This
allows the SLEEP instruction to be
executed.
This may be used if the “new”
input voltage has not changed by
more than 1LSb (i.e. 5 mV @
5.12V) from the last sampled volt-
age (as stated on C
1 T
0
OSC
OSC
HOLD
CY
).
based, V
based, V
NEW_DATA
Conditions
DONE
DS31030A-page 30-35
REF
REF
CY
HOLD
full range
is added
3.0V
).
30